Has Jo ever been in a car accident or suffered other type of neck or back injury ??
Reason I ask is I got my top vertebrae, forgot the name, injured about 8 years ago. Breaking up a fight in one of the worst gentleman's clubs in the city. Lead Bouncer, fun times. Anyways, I had one guy wrapped up and controlled, another bouncer had the other guy controlled. Well we did not know about the third, he punched me in the back of the neck, knocked me out. Woke up in the hospital all braced and strapped down. Anyways, when the top 2 vertebrae swelled up, they ended up pinching alot of nerves, when the swelling went down, they just took the nerves and kept them pinched.
I get chronic head aches ranging from dull that last for about a week to migraines that last all most as long. Most of mine can be helped by tapping on my neck, like messing with a loose light socket. Oh and every now and then my pinky finger on my right hand goes numb for a day or so.
Maybe a good question to ask the doctor ?? I don't know, just trying to help